CN107099752A - A kind of low-alloy 12Cr1MoV steel plates and its production method - Google Patents
A kind of low-alloy 12Cr1MoV steel plates and its production method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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Abstract
This hair discloses a kind of low-alloy 12Cr1MoV steel plates and its production method, and the steel plate chemical composition and weight/mass percentage composition are：C：0.10~0.15%, Si：0.20~0.35%, Mn：0.40~0.55%, P≤0.015%, S≤0.010%, Cr：0.90~1.10%, Mo：0.25~0.35%, V：0.15~0.25%, Al >=0.030%, surplus is Fe and inevitable impurity.The production method of steel plate of the present invention includes smelting, continuous casting, heating, rolling, tempering process.The armor plate strength of production is matched well with toughness, while greatly reducing production cost.Steel plate indices fully meet standard requirement, yield strength >=265Mpa, tensile strength Rm >=460Mpa；Elongation percentage >=24%, 20 DEG C side knock work(>=100J.
Description
Technical field
The invention belongs to iron and steel smelting technology field, and in particular to a kind of low-alloy 12Cr1MoV steel plates and its producer
Method.
Background technology
12Cr1MoV steel plates are a kind of middle temperature steel heavy plate for pressure vessels of low-alloy, are usually used in high pressure, subcritical power station, boiler
Overheat steel pipe, conduit, coiled pipe etc. operating temperature in equipment no more than 570~585 DEG C, steel plate use condition are harsh, material
Material is chronically under high temperature, high pressure operating mode.Traditional 12Cr1MoV steel plates use the production technology of normalizing+tempering, and steel plate is used
There is fluctuation during performance, production cost is also higher.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of low-alloy 12Cr1MoV steel plates；Present invention also offers one kind
The production method of low-alloy 12Cr1MoV steel plates, production technology is combined using controlled rolling+tempering heat treatment, and the steel plate produced is each
Item performance indications fully meet technical requirements, while greatly reducing production cost.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：A kind of low-alloy 12Cr1MoV steel plates, it is described
Steel plate chemical composition and weight/mass percentage composition are：C：0.10~0.15%, Si：0.20~0.35%, Mn：0.40~0.55%, P≤
0.015%, S≤0.010%, Cr：0.90~1.10%, Mo：0.25~0.35%, V：0.15~0.25%, Al >=0.030%, surplus
For Fe and inevitable impurity.
Steel plate thickness of the present invention is 10~20mm；Yield strength >=265Mpa, tensile strength Rm >=460Mpa；Extension
Rate >=24%, 20 DEG C side knock work(>=100J.
Present invention also offers a kind of production method of low-alloy 12Cr1MoV steel plates, it include smelting, continuous casting, heating,
Rolling, tempering process, it is characterised in that the production technology being combined using controlled rolling+tempering heat treatment.
Rolling process of the present invention, using austenite recrystallization type and non-recrystallization type two benches controlled rolling process, first
Stage is carried out on roughing mill, start rolling temperature control at 1050~1100 DEG C, the first stage control total reduction of roughing mill >=
70%, temperature is treated in pass deformation rate >=15%, roughing finishing temperature >=950 DEG C, and this stage is mainly fining austenite grains degree.
Rolling process of the present invention, using austenite recrystallization type and non-recrystallization type two benches controlled rolling process, second
Stage controlled rolling is carried out on finishing mill, start rolling temperature≤910 DEG C, and 1-3 passages use heavy reduction before open rolling, and percentage pass reduction exists
16~20%, accumulation reduction ratio >=50%, finishing temperature control is cooled down at 800~840 DEG C after rolling using air cooling.
Tempering process of the present invention, to carrying out temper, temperature 740~760 using the steel plate of controlled rolling process
DEG C, soaking time is 4.5~5.5min/mm.
Smelting procedure of the present invention, molten steel uses converter smelting, and the refining of LF stoves feeds aluminum steel >=6m/t, quickly by stove
Slag bleaches, the white slag retention time >=25min.
Each constituents are adjusted to internal control scope by smelting procedure of the present invention, molten steel before using VD stove applications of vacuum, vacuum,
The vacuum retention time >=20min.
Continuous casting working procedure of the present invention, molten steel obtains continuous casting billet by continuous casting, and Cross Section of CC Billet is 200*1300-
De-stacking is cleared up again by 2200mm, continuous casting billet stacking >=24h, clears up temperature >=200 DEG C.
Heating process of the present invention, continuous casting billet is heated in continuous oven, and heating coefficient is 8-10min/cm, and highest adds
Then hot temperature≤1250 DEG C, soaking zone temperature control is come out of the stove and is rolled at 1220~1240 DEG C.
The steel plate of the present invention is the production technology being combined by controlled rolling+tempering heat treatment, is produced satisfactory
12Cr1MoV steel plates, it is manufactured, and process is simple, and production cost is low, can in high volume be produced.C in the composition design of steel plate
Content is 0.10~0.15%, C as main intensified element, raising armor plate strength；Mn content drops in 0.40~0.70%, Mn
The critical transition temperature of low steel, while playing a part of refining pearlite；Cr content is 0.90~1.20%, Cr main functions
It is the quenching degree for improving steel, improves the intensity of steel；Mo content is the quenching degree and heat resistance that 0.25~0.35%, Mo improves steel,
Temper brittleness is prevented, steel belt roof bolt stability is improved, plasticity is improved；V content is 0.15-0.30%, refines the tissue and crystalline substance of steel
Grain, improves the intensity and yield tensile ratio of steel；Al content be >=0.030%, steel-making early stage be main deoxidier, and energy crystal grain thinning,
Remaining N element in fixed steel；Impurity element P, S equal size is limited on request, is dropped as far as possible under process equipment ability
It is low, to reach that steel is pure, the uniform purpose of mechanical property.The condition of delivery of the present invention is controlled rolling+Annealed Strip, using this work
Steel plate of the 12Cr1MoV steel plates property indices of skill production significantly better than traditional normalizing+tempering process production.
Low-alloy 12Cr1MoV steel plate examination criterias refer to GB713-2014.
It is using the beneficial effect produced by above-mentioned technical proposal：1st, steel plate of the present invention uses controlled rolling+tempering heat treatment
Technique is produced, and substantially reduces production cost；2nd, armor plate strength and toughness matching are good, yield strength >=265Mpa, tension
Intensity Rm >=460Mpa；Elongation percentage >=24%, 20 DEG C side knock work(>=100J.
Embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1
This 12Cr1MoV steel plate thickness is 10mm, and chemical composition and weight/mass percentage composition are：C：0.12%, Si：0.25%, Mn：
0.48%, P：0.010%, S：0.001%, Cr：0.91%, Mo：0.26%, V：0.17%, Al：0.033%, surplus is Fe and can not kept away
The impurity exempted from.
The production method of this 12Cr1MoV steel plates include smeltings, continuous casting, heating, rolling, tempering process, using controlled rolling+time
Burning hot processing is combined production technology, and concrete technology step is as follows：
1）Smelting procedure：Molten steel uses converter smelting, and the refining of LF stoves feeds aluminum steel 6.5m/t, quickly clinker bleaches, white slag is protected
Hold time 30min；Each constituents are adjusted to internal control scope, vacuum retention time 25min before VD stove applications of vacuum, vacuum.
2）Continuous casting working procedure：Steel plate uses continuous casting, and continuous casting billet uses section for 200*2100mm, continuous casting billet stacking 25h
Blank is begun a clean up, cleaning temperature is 220 DEG C.
3）Heating process：Continuous casting billet is heated in continuous oven, and heating coefficient is according to 9min/cm, maximum heating temperature
1250 DEG C, then soaking zone temperature control is come out of the stove and is rolled at 1230 DEG C.
4）Rolling process：Using austenite recrystallization type and non-recrystallization type two benches controlled rolling process.First stage is thick
Carried out on milling train, start rolling temperature control is at 1070 DEG C, and the first stage of roughing mill controls total reduction to be 75%, pass deformation rate
17%, 970 DEG C of roughing finishing temperature treats temperature, and this stage is mainly fining austenite grains degree；Second stage controlled rolling is on finishing mill
Carry out, 890 DEG C of start rolling temperature, 3 passages use heavy reduction before open rolling, and percentage pass reduction is in 16%, accumulation reduction ratio 56%, finish to gauge
830 DEG C of temperature；The air cooling type of cooling is used after rolling.
5）Tempering process：To carrying out temper using the steel plate of controlled rolling process, 740 DEG C of temperature, soaking time are
4.5min/mm。
The mechanical property of gained steel plate is shown in Table 1.
Embodiment 2
This 12Cr1MoV steel plate thickness is 12mm, and chemical composition and weight/mass percentage composition are：C：0.12%, Si：0.22%, Mn：
0.46%, P：0.008%, S：0.002%, Cr：0.93%, Mo：0.27%, V：0.16%, Al：0.031%, surplus is Fe and can not kept away
The impurity exempted from.
The production method of this 12Cr1MoV steel plates include smeltings, continuous casting, heating, rolling, tempering process, using controlled rolling+time
Burning hot processing is combined production technology, and concrete technology step is as follows：
1）Smelting procedure：Molten steel uses converter smelting, and the refining of LF stoves feeds aluminum steel 6.3m/t, quickly clinker bleaches, white slag is protected
Hold time 31min；Each constituents are adjusted to internal control scope, vacuum retention time 26min before VD stove applications of vacuum, vacuum.
2）Continuous casting working procedure：Steel plate uses continuous casting, and continuous casting billet uses section for 200*2000mm, continuous casting billet stacking 25h
Blank is begun a clean up, cleaning temperature is 230 DEG C.
3）Heating process：Continuous casting billet is heated in continuous oven, and heating coefficient is according to 9min/cm, maximum heating temperature
1250 DEG C, then soaking zone temperature control is come out of the stove and is rolled at 1230 DEG C.
4）Rolling process：Using austenite recrystallization type and non-recrystallization type two benches controlled rolling process.First stage is thick
Carried out on milling train, start rolling temperature control is at 1065 DEG C, and the first stage of roughing mill controls total reduction to be 73%, pass deformation rate
17%, 970 DEG C of roughing finishing temperature treats temperature, and this stage is mainly fining austenite grains degree；Second stage controlled rolling is on finishing mill
Carry out, 900 DEG C of start rolling temperature, 2 passages use heavy reduction before open rolling, and percentage pass reduction is in 16%, accumulation reduction ratio 57%, finish to gauge
830 DEG C of temperature；The air cooling type of cooling is used after rolling.
5）Tempering process：To carrying out temper using the steel plate of controlled rolling process, 740 DEG C of temperature, soaking time are
4.5min/mm。
The mechanical property of gained steel plate is shown in Table 1.
Embodiment 3
This 12Cr1MoV steel plate thickness is 16mm, and chemical composition and weight/mass percentage composition are：C：0.13%, Si：0.23%, Mn：
0.50%, P：0.010%, S：0.003%, Cr：0.96%, Mo：0.29%, V：0.18%, Al：0.030%, surplus is Fe and can not kept away
The impurity exempted from.
The production method of this 12Cr1MoV steel plates include smeltings, continuous casting, heating, rolling, tempering process, using controlled rolling+time
Burning hot processing is combined production technology, and concrete technology step is as follows：
1）Smelting procedure：Molten steel uses converter smelting, and the refining of LF stoves feeds aluminum steel 6.5m/t, quickly clinker bleaches, white slag is protected
Hold time 33min；Each constituents are adjusted to internal control scope, vacuum retention time 27min before VD stove applications of vacuum, vacuum.
2）Continuous casting working procedure：Steel plate uses continuous casting, and continuous casting billet uses section for 200*1600mm, continuous casting billet stacking 25h
Blank is begun a clean up, cleaning temperature is 220 DEG C.
3）Heating process：Continuous casting billet is heated in continuous oven, and heating coefficient is according to 9min/cm, maximum heating temperature
1250 DEG C, then soaking zone temperature control is come out of the stove and is rolled at 1230 DEG C.
4）Steel rolling process：Using austenite recrystallization type and non-recrystallization type two benches controlled rolling process.First stage is thick
Carried out on milling train, start rolling temperature control is at 1070 DEG C, and the first stage of roughing mill controls total reduction to be 75%, pass deformation rate
17%, 960 DEG C of roughing finishing temperature treats temperature, and this stage is mainly fining austenite grains degree；Second stage controlled rolling is on finishing mill
Carry out, 890 DEG C of start rolling temperature, 2 passages use heavy reduction before open rolling, and percentage pass reduction is in 16%, accumulation reduction ratio 55%, finish to gauge
830 DEG C of temperature；The air cooling type of cooling is used after rolling.
5）Tempering process：To carrying out temper using the steel plate of controlled rolling process, 740 DEG C of temperature, soaking time are
4.5min/mm。
The mechanical property of gained steel plate is shown in Table 1.
Embodiment 4
This 12Cr1MoV steel plate thickness is 20mm, and chemical composition and weight/mass percentage composition are：C：0.12%, Si：0.21%, Mn：
0.49%, P：0.011%, S：0.002%, Cr：0.99%, Mo：0.28%, V：0.16%, Al：0.030%, surplus is Fe and can not kept away
The impurity exempted from.
The production method of this 12Cr1MoV steel plates include smeltings, continuous casting, heating, rolling, tempering process, using controlled rolling+time
Burning hot processing is combined production technology, and concrete technology step is as follows：
1）Smelting procedure：Molten steel uses converter smelting, and the refining of LF stoves feeds aluminum steel 6.4m/t, quickly clinker bleaches, white slag is protected
Hold time 30min；Each constituents are adjusted to internal control scope, vacuum retention time 27min before VD stove applications of vacuum, vacuum.
2）Continuous casting working procedure：Steel plate uses continuous casting, and continuous casting billet uses section for 200*1300mm, continuous casting billet stacking 26h
Blank is begun a clean up, cleaning temperature is 230 DEG C.
3）Heating process：Continuous casting billet is heated in continuous oven, and heating coefficient is according to 9min/cm, maximum heating temperature
1250 DEG C, then soaking zone temperature control is come out of the stove and is rolled at 1235 DEG C.
4）Steel rolling process：Using austenite recrystallization type and non-recrystallization type two benches controlled rolling process.First stage is thick
Carried out on milling train, start rolling temperature control is at 1060 DEG C, and the first stage of roughing mill controls total reduction to be 80%, pass deformation rate
15%, 960 DEG C of roughing finishing temperature treats temperature, and this stage is mainly fining austenite grains degree；Second stage controlled rolling is on finishing mill
Carry out, 880 DEG C of start rolling temperature, 2 passages use heavy reduction before open rolling, and percentage pass reduction is in 16%, accumulation reduction ratio 57%, finish to gauge
830 DEG C of temperature；The air cooling type of cooling is used after rolling.
5）Tempering process：To carrying out temper using the steel plate of controlled rolling process, 760 DEG C of temperature, soaking time are
4.5min/mm。
The mechanical property of gained steel plate is shown in Table 1.
Embodiment 5
This 12Cr1MoV steel plate thickness is 15mm, and chemical composition and weight/mass percentage composition are：C：0.10%, Si：0.20%, Mn：
0.40%, P：0.015%, S：0.010%, Cr：0.90%, Mo：0.25%, V：0.15%, Al：0.030%, surplus is Fe and can not kept away
The impurity exempted from.
The production method of this 12Cr1MoV steel plates include smeltings, continuous casting, heating, rolling, tempering process, using controlled rolling+time
Burning hot processing is combined production technology, and concrete technology step is as follows：
1）Smelting procedure：Molten steel uses converter smelting, and the refining of LF stoves feeds aluminum steel 6m/t, quickly clinker bleaches, white slag is kept
Time 25min；Each constituents are adjusted to internal control scope, vacuum retention time 20min before VD stove applications of vacuum, vacuum.
2）Continuous casting working procedure：Steel plate uses continuous casting, and continuous casting billet uses section for 200*1800mm, continuous casting billet stacking 24h
Blank is begun a clean up, cleaning temperature is 200 DEG C.
3）Heating process：Continuous casting billet is heated in continuous oven, and heating coefficient is according to 8min/cm, maximum heating temperature
1250 DEG C, then soaking zone temperature control is come out of the stove and is rolled at 1220 DEG C.
4）Steel rolling process：Using austenite recrystallization type and non-recrystallization type two benches controlled rolling process.First stage is thick
Carried out on milling train, start rolling temperature control is at 1050 DEG C, and the first stage of roughing mill controls total reduction to be 70%, pass deformation rate
19%, 950 DEG C of roughing finishing temperature treats temperature, and this stage is mainly fining austenite grains degree；Second stage controlled rolling is on finishing mill
Carry out, 910 DEG C of start rolling temperature, 3 passages use heavy reduction before open rolling, and percentage pass reduction is in 17%, accumulation reduction ratio 50%, finish to gauge
800 DEG C of temperature；The air cooling type of cooling is used after rolling.
5）Tempering process：To carrying out temper using the steel plate of controlled rolling process, 745 DEG C of temperature, soaking time are
4.9min/mm。
The mechanical property of gained steel plate is shown in Table 1.
Embodiment 6
This 12Cr1MoV steel plate thickness is 18mm, and chemical composition and weight/mass percentage composition are：C：0.15%, Si：0.35%, Mn：
0.55%, P：0.009%, S：0.006%, Cr：1.10%, Mo：0.35%, V：0.25%, Al：0.030%, surplus is Fe and can not kept away
The impurity exempted from.
The production method of this 12Cr1MoV steel plates include smeltings, continuous casting, heating, rolling, tempering process, using controlled rolling+time
Burning hot processing is combined production technology, and concrete technology step is as follows：
1）Smelting procedure：Molten steel uses converter smelting, and the refining of LF stoves feeds aluminum steel 6.9m/t, quickly clinker bleaches, white slag is protected
Hold time 28min；Each constituents are adjusted to internal control scope, vacuum retention time 23min before VD stove applications of vacuum, vacuum.
2）Continuous casting working procedure：Steel plate uses continuous casting, and continuous casting billet uses section for 200*2100mm, continuous casting billet stacking 28h
Blank is begun a clean up, cleaning temperature is 240 DEG C.
3）Heating process：Continuous casting billet is heated in continuous oven, and heating coefficient is according to 10min/cm, maximum heating temperature
1250 DEG C, then soaking zone temperature control is come out of the stove and is rolled at 1240 DEG C.
4）Steel rolling process：Using austenite recrystallization type and non-recrystallization type two benches controlled rolling process.First stage is thick
Carried out on milling train, start rolling temperature control is at 1100 DEG C, and the first stage of roughing mill controls total reduction to be 76%, pass deformation rate
20%, 975 DEG C of roughing finishing temperature treats temperature, and this stage is mainly fining austenite grains degree；Second stage controlled rolling is on finishing mill
Carry out, 900 DEG C of start rolling temperature, 1 passage uses heavy reduction before open rolling, and percentage pass reduction is in 20%, accumulation reduction ratio 58%, finish to gauge
840 DEG C of temperature；The air cooling type of cooling is used after rolling.
5）Tempering process：To carrying out temper using the steel plate of controlled rolling process, 750 DEG C of temperature, soaking time are
5.5min/mm。
The mechanical property of gained steel plate is shown in Table 1.
The mechanical property of the 12Cr1MoV steel plates of table 1
Experiment is proved：Armor plate strength and the toughness matching of the present invention is good, technique productions is combined using controlled rolling+tempering, with biography
Normalizing+tempering process of system is compared, and the steel plate steel plate combination property of production is stable, and quality is good, and production cost is low, can be achieved big
Batch production.
Above example is only used to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacement, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
Among sharp claimed range.
Claims (10)
1. a kind of low-alloy 12Cr1MoV steel plates, it is characterised in that the steel plate chemical composition and weight/mass percentage composition are：C：
0.10~0.15%, Si：0.20~0.35%, Mn：0.40~0.55%, P≤0.015%, S≤0.010%, Cr：0.90~1.10%,
Mo：0.25~0.35%, V：0.15~0.25%, Al >=0.030%, surplus is Fe and inevitable impurity.
2. a kind of low-alloy 12Cr1MoV steel plates according to claim 1, it is characterised in that the steel plate thickness is 10~
20mm；Yield strength >=265Mpa, tensile strength Rm >=460Mpa；Elongation percentage >=24%, 20 DEG C side knock work(>=100J.
3. based on a kind of production method of low-alloy 12Cr1MoV steel plates described in claim 1 or 2, it include smelting, continuous casting,
Heating, rolling, tempering process, it is characterised in that the production technology being combined using controlled rolling+tempering heat treatment.
4. a kind of production method of low-alloy 12Cr1MoV steel plates according to claim 3, it is characterised in that the rolling
Process, using austenite recrystallization type and non-recrystallization type two benches controlled rolling process, the first stage is carried out on roughing mill, open rolling
Temperature control is in 1050~1100 DEG C, first stage control total reduction >=70% of roughing mill, pass deformation rate >=15%, roughing
Treat temperature in finishing temperature >=950 DEG C.
5. a kind of production method of low-alloy 12Cr1MoV steel plates according to claim 3, it is characterised in that the rolling
Process, using austenite recrystallization type and non-recrystallization type two benches controlled rolling process, second stage controlled rolling is carried out on finishing mill,
1-3 passages use heavy reduction before start rolling temperature≤910 DEG C, open rolling, percentage pass reduction 16~20%, accumulation reduction ratio >=
50%, finishing temperature control is cooled down at 800~840 DEG C after rolling using air cooling.
6. a kind of production method of low-alloy 12Cr1MoV steel plates according to claim 3, it is characterised in that the tempering
Process, to using controlled rolling process steel plate carry out temper, 740~760 DEG C of temperature, soaking time be 4.5~
5.5min/mm。
7. a kind of production method of low-alloy 12Cr1MoV steel plates according to claim 3-6 any one, its feature exists
In the smelting procedure, molten steel uses converter smelting, and the refining of LF stoves feeds aluminum steel >=6m/t, quickly clinker bleaches, white slag
Retention time >=25min.
8. a kind of production method of low-alloy 12Cr1MoV steel plates according to claim 3-6 any one, its feature exists
In, the smelting procedure, molten steel uses before VD stove applications of vacuum, vacuum each constituents being adjusted to internal control scope, when vacuum is kept
Between >=20min.
9. a kind of production method of low-alloy 12Cr1MoV steel plates according to claim 3-6 any one, its feature exists
In the continuous casting working procedure, molten steel obtains continuous casting billet by continuous casting, and Cross Section of CC Billet is 200*1300-2200mm, continuous casting billet
Stacking >=24h again clear up by de-stacking, clears up temperature >=200 DEG C.
10. a kind of production method of low-alloy 12Cr1MoV steel plates according to claim 3-6 any one, its feature exists
In, the heating process, continuous casting billet is heated in continuous oven, and heating coefficient is 8-10min/cm, and maximum heating temperature≤
1250 DEG C, then soaking zone temperature control is come out of the stove and is rolled at 1220~1240 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109047329A (en) * | 2018-08-29 | 2018-12-21 | 舞阳钢铁有限责任公司 | A kind of milling method of low-alloy 15CrMo steel plate |
| CN109097701A (en) * | 2018-08-31 | 2018-12-28 | 舞阳钢铁有限责任公司 | A kind of alloy structure 15MnVB steel plate and its production method |
| CN109112413A (en) * | 2018-10-22 | 2019-01-01 | 湖南人文科技学院 | A kind of 12Cr1MoV Mayari and its production technology |
| CN109112400A (en) * | 2018-08-31 | 2019-01-01 | 舞阳钢铁有限责任公司 | A kind of container heat-resisting 12Cr1MoVR steel plate and its production method |
| CN109321728A (en) * | 2018-10-12 | 2019-02-12 | 舞阳钢铁有限责任公司 | A kind of milling method of low-alloy 12Cr1MoV steel plate |
| CN109722509A (en) * | 2019-01-28 | 2019-05-07 | 舞阳钢铁有限责任公司 | Reduce 12Cr2Mo1R steel plate normalizing+tempering state surface hardness method |
| CN109722598A (en) * | 2019-01-14 | 2019-05-07 | 舞阳钢铁有限责任公司 | A kind of 12Cr1MoV adds vanadium chrome molybdenum steel plate and its production method |
| CN109763073A (en) * | 2019-01-30 | 2019-05-17 | 舞阳钢铁有限责任公司 | A kind of methyl alcohol synthetic reactor steel plate and its production method |
| CN111926244A (en) * | 2020-07-09 | 2020-11-13 | 舞阳钢铁有限责任公司 | 15CrMoR steel plate with good low-temperature impact toughness and production method thereof |
| CN114164376A (en) * | 2021-10-26 | 2022-03-11 | 南京钢铁股份有限公司 | Low-carbon peritectic steel continuous casting round billet for high-pressure boiler and manufacturing method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047329A (en) * | 2018-08-29 | 2018-12-21 | 舞阳钢铁有限责任公司 | A kind of milling method of low-alloy 15CrMo steel plate |
| CN109097701A (en) * | 2018-08-31 | 2018-12-28 | 舞阳钢铁有限责任公司 | A kind of alloy structure 15MnVB steel plate and its production method |
| CN109112400A (en) * | 2018-08-31 | 2019-01-01 | 舞阳钢铁有限责任公司 | A kind of container heat-resisting 12Cr1MoVR steel plate and its production method |
| CN109321728A (en) * | 2018-10-12 | 2019-02-12 | 舞阳钢铁有限责任公司 | A kind of milling method of low-alloy 12Cr1MoV steel plate |
| CN109112413A (en) * | 2018-10-22 | 2019-01-01 | 湖南人文科技学院 | A kind of 12Cr1MoV Mayari and its production technology |
| CN109112413B (en) * | 2018-10-22 | 2019-11-15 | 湖南人文科技学院 | A kind of 12Cr1MoV Mayari and its production technology |
| CN109722598A (en) * | 2019-01-14 | 2019-05-07 | 舞阳钢铁有限责任公司 | A kind of 12Cr1MoV adds vanadium chrome molybdenum steel plate and its production method |
| CN109722509A (en) * | 2019-01-28 | 2019-05-07 | 舞阳钢铁有限责任公司 | Reduce 12Cr2Mo1R steel plate normalizing+tempering state surface hardness method |
| CN109722509B (en) * | 2019-01-28 | 2020-11-03 | 舞阳钢铁有限责任公司 | Method for reducing surface hardness of 12Cr2Mo1R steel plate in normalized and tempered states |
| CN109763073A (en) * | 2019-01-30 | 2019-05-17 | 舞阳钢铁有限责任公司 | A kind of methyl alcohol synthetic reactor steel plate and its production method |
| CN111926244A (en) * | 2020-07-09 | 2020-11-13 | 舞阳钢铁有限责任公司 | 15CrMoR steel plate with good low-temperature impact toughness and production method thereof |
| CN114164376A (en) * | 2021-10-26 | 2022-03-11 | 南京钢铁股份有限公司 | Low-carbon peritectic steel continuous casting round billet for high-pressure boiler and manufacturing method thereof |
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